The adventure takes players from a town devastated by an unexpected flood, through a drowned land where nature is turned upside down and desperate families cling to the roofs of their ruined homes, hiding from the monstrous products of a disordered world, through the strange tomb of an ancient race, to a profundal zone, hidden for millennia and now exposed, and finally to the Observatory itself, an eerie abandoned treasure palace, where they will encounter a pale and unexpected terror which will seek to claim their lives. The adventure is suitable for a lucky mid-range party, a stupid high-level party or an exceedingly clever low level party. It is difficult, with a meaningful possibility of character death. Should you find them, and defeat their guardians, the treasures of an ancient culture will be yours. At the final point of the Observatory is a glimpse of another world.
In search of the truth behind a rumour that some of the Ashes of Evensong have been found, the player characters find that the Ashes are ultimately incidental to a far more worrying development. The trail of the Ashes leads them to the discovery of a fiend pact warlock operating among the ruling class of the city, a vault of forbidden magics the secrets of which have been breached, and a diabolic artefact about to be reclaimed in the name of a Duchess of Hell. This adventure is intended for parties of 4-6 characters of level 11 to level 13. With a focus on investigation, puzzles, and dangerous traps, Ashes of Evensong rewards players for caution and cleverness.